The usage of the phrase "heavy toll" in the declaration aims to refer to the:
A). The casualties of the first war.
Declaration of Independence
The phrase "heavy toll" communicates the very idea of unwanted consequences or the outcome brought by a specific incident.
In the given paragraph, the use of this phrase refers to the fatalities produced in the very first war.
Through this, the author conveys that the rights of every individual must be considered in order to prevent any revolt or war.
Thus, option A is the correct answer.
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